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Finding the Fourth Proportional to 64,714.95, 89,306.45 and 36,420.64

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Solution

The fourth proportional to 64,714.95, 89,306.45 and 36,420.64 is: 50,260.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,714.95 : 89,306.45 = 36,420.64 : x
  2. Step 2: Convert to fraction form
    64,714.95/89,306.45 = 36,420.64/x
  3. Step 3: Cross multiply
    64,714.95x = 89,306.45 × 36,420.64
  4. Step 4: Simplify right side
    64,714.95x = 3,252,597,796.34
  5. Step 5: Solve for x
    x = 3,252,597,796.34/64,714.95
  6. Step 6: Final answer
    x = 50,260.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.